我正在为 RESTful API POST-verb 编写测试,它将多部分表单数据发送到服务器。我想对数据进行 json 编码。这样做的正确方法是什么?以下是 3 个测试,其中前 2 个通过,第三个(我需要的场景)失败。任何帮助,将不胜感激。
import requests
import json
print "test 1, files+data/nojson"
requests.post('http://localhost:8080', files={'spot[photo]': open('test.jpg', 'rb')}, data={'spot': 'spot_description'})
print "test 2, only data/json"
requests.post('http://localhost:8080',data=json.dumps({'spot': 'spot_description'}))
print "test 3, only files+data/json"
requests.post('http://localhost:8080', files={'spot[photo]': open('test.jpg',
'rb')}, data=json.dumps({'spot': 'spot_description'}))
代码输出:
$ /cygdrive/c/Python27/python.exe -B test.py
test 1, files+data/nojson
test 2, only data/json
test 3, only files+data/json
Traceback (most recent call last):
File "test.py", line 12, in <module>
'rb')}, data=json.dumps({'spot': 'spot_description'}))
File "C:\Python27\lib\site-packages\requests\api.py", line 98, in post
return request('post', url, data=data, **kwargs)
File "C:\Python27\lib\site-packages\requests\safe_mode.py", line 39, in wrapped
return function(method, url, **kwargs)
File "C:\Python27\lib\site-packages\requests\api.py", line 51, in request
return session.request(method=method, url=url, **kwargs)
File "C:\Python27\lib\site-packages\requests\sessions.py", line 241, in request
r.send(prefetch=prefetch)
File "C:\Python27\lib\site-packages\requests\models.py", line 532, in send
(body, content_type) = self._encode_files(self.files)
File "C:\Python27\lib\site-packages\requests\models.py", line 358, in _encode_files
fields = to_key_val_list(self.data)
File "C:\Python27\lib\site-packages\requests\utils.py", line 157, in to_key_val_list
raise ValueError('cannot encode objects that are not 2-tuples')
ValueError: cannot encode objects that are not 2-tuples